Tunable (δπ, δπ)-Type Antiferromagnetic Order in α-Fe(Te,Se) superconductors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Y. Qiu
  • Q. Huang
  • M. A. Green
  • P. Zajdel
  • M. R. Fitzsimmons
  • M. Zhernenkov
  • S. Chang
  • Minghu Fang
  • B. Qian
  • E. K. Vehstedt
  • Jinhu Yang
  • H. M. Pham
  • L. Spinu
  • Z. Q. Mao

Detail(s)

Original languageEnglish
Article number247001
Journal / PublicationPhysical Review Letters
Volume102
Issue number24
Online published17 Jun 2009
Publication statusPublished - 19 Jun 2009
Externally publishedYes

Abstract

The new α-Fe(Te,Se) superconductors share the common iron building block and ferminology with the LaFeAsO and BaFe2As2 families of superconductors. In contrast with the predicted commensurate spin-density-wave order at the nesting wave vector (π, 0), a completely different magnetic order with a composition tunable propagation vector (δπ, δπ) was determined for the parent compound Fe1+yTe in this powder and single-crystal neutron diffraction study. The new antiferromagnetic order survives as a short-range one even in the highest TC sample. An alternative to the prevailing nesting Fermi surface mechanism is required to understand the latest family of ferrous superconductors.

Citation Format(s)

Tunable (δπ, δπ)-Type Antiferromagnetic Order in α-Fe(Te,Se) superconductors. / Bao, Wei; Qiu, Y.; Huang, Q. et al.
In: Physical Review Letters, Vol. 102, No. 24, 247001, 19.06.2009.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review